Files
sigma-rules/rta/suspicious_lineage_script.py
T
2023-10-03 10:47:58 -04:00

48 lines
1.6 KiB
Python

# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
# or more contributor license agreements. Licensed under the Elastic License
# 2.0; you may not use this file except in compliance with the Elastic License
# 2.0.
from . import common
from . import RtaMetadata
metadata = RtaMetadata(
uuid="7961c43d-4dd8-45ec-b237-a940bf55d114",
platforms=["windows"],
endpoint=[],
siem=[{
'rule_id': 'e7125cea-9fe1-42a5-9a05-b0792cf86f5a',
'rule_name': 'Execution of Persistent Suspicious Program'
}],
techniques=['T1547', 'T1547.001'],
)
EXE_FILE = common.get_path("bin", "renamed_posh.exe")
RENAMER = common.get_path("bin", "rcedit-x64.exe")
@common.requires_os(*metadata.platforms)
def main():
cscript = "C:\\Users\\Public\\cscript.exe"
explorer = "C:\\Users\\Public\\explorer.exe"
userinit = "C:\\Users\\Public\\userinit.exe"
winlogon = "C:\\Users\\Public\\winlogon.exe"
rcedit = "C:\\Users\\Public\\rcedit.exe"
common.copy_file(EXE_FILE, cscript)
common.copy_file(EXE_FILE, explorer)
common.copy_file(EXE_FILE, userinit)
common.copy_file(EXE_FILE, winlogon)
common.copy_file(RENAMER, rcedit)
# Execute command
common.log("Modifying the OriginalFileName attribute")
common.execute([rcedit, cscript, "--set-version-string", "OriginalFilename", "cscript.exe"])
common.execute([winlogon, "/c", userinit], timeout=5, kill=True)
common.execute([explorer, "/c", cscript], timeout=5, kill=True)
common.remove_files(cscript, explorer, userinit, winlogon)
if __name__ == "__main__":
exit(main())